morpheme (n.)youdaoicibaDictYouDict[morpheme 词源字典]
"smallest meaningful unit in a language," 1896, from German morpheme, coined 1895 by Polish-born linguist Jan Baudouin de Courtenay (1845-1929), from Greek morphe "form, shape" (see Morpheus), on analogy of phonème.[morpheme etymology, morpheme origin, 英语词源]